NVIC_SetPriority(SysTick_IRQn, 0x00U);} 修改后的：void systick_config(void){ /* setup sys...
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND); NVIC_SetPriority(SysTick_IRQn, 0); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave...
void systick_config(void) { /* setup systick timer for 1000Hz interrupts */ if(SysTick_Config(SystemCoreClock / 1000U)){ //将系统滴答定时器设置为1Khz,就是1ms触发一次滴答定时器 /* capture error */ while(1){ } } /* configure the systick handler priority */ NVIC_SetPriority(SysTick_IR...
NVIC_SetPriority(TIMER2_IRQn, 2); // 设置定时器2中断优先级 NVIC_EnableIRQ(TIMER2_IRQn); // ...
NVIC_SetPriority(SysTick_IRQn,0x00U); } /*! \brief turn on selected led \param[in] lednum: specify the Led to be turned on \arg LED1 \arg LED2 \arg LED3 \param[out] none \retval none */ voidgd_eval_led_on(led_typedef_enum lednum) ...
}// 关闭滴答定时器SysTick->CTRL &= ~ SysTick_CTRL_ENABLE_Msk;/* configure the systick handler priority */NVIC_SetPriority(SysTick_IRQn, 0x00U); } 本函数实际上只是调用了 SysTick_Config() 函数,它是属于内核层的 Cortex-M3 通用函数,位于 core_cm3.h 文件中。若调用 SysTick_Config() 配置...
}/* configure the systick handler priority */NVIC_SetPriority(SysTick_IRQn,0x00U); } 修改后的: voidsystick_config(void){/* setup systick timer for 1000000Hz interrupts */if(SysTick_Config(SystemCoreClock /1000000U)) {/* capture error */while(1) { ...
NVIC_SetPriority(SysTick_IRQn, 0x00U); } 可以通过GPIO API配置LED。使用之前,GPIO外设模块必须开启时钟: /* enable the LED1 GPIO clock */ rcu_periph_clock_enable(RCU_GPIOA); /* configure LED1 GPIO port */ gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_ PUPD_NONE, GPIO_PIN_8); ...
NVIC_SetPriority(SysTick_IRQn, 0); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave(); ...
NVIC_SetPriority(SysTick_IRQn, 0); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave(); ...